From: Andre Przywara Date: Wed, 5 May 2021 12:53:05 +0000 (+0100) Subject: sunxi: clock: H6/H616: Fix PLL clock factor encodings X-Git-Url: http://git.dujemihanovic.xyz/img/static/gitweb.css?a=commitdiff_plain;h=f9d1324775a08c7892b31b26f24169e024b665ec;p=u-boot.git sunxi: clock: H6/H616: Fix PLL clock factor encodings Most clock factors and dividers in the H6 PLLs use a "+1 encoding", which we were missing on two occasions. This fixes the MMC clock setup on the H6, which could be slightly off due to the wrong parent frequency: mmc 2 set mod-clk req 52000000 parent 1176000000 n 2 m 12 rate 49000000 Also the CPU frequency (PLL1) was a tad too high before. For PLL5 (DRAM) we already accounted for this +1, but in the DRAM code itself, not in the bit field macro. Move this there to be aligned with what the other SoCs and other PLLs do. Signed-off-by: Andre Przywara Reviewed-by: Jernej Skrabec --- diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h b/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h index 62abfc4ef6..2e076cf594 100644 --- a/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h +++ b/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h @@ -233,14 +233,14 @@ struct sunxi_ccm_reg { #define CCM_PLL1_OUT_EN BIT(27) #define CCM_PLL1_CLOCK_TIME_2 (2 << 24) #define CCM_PLL1_CTRL_P(p) ((p) << 16) -#define CCM_PLL1_CTRL_N(n) ((n) << 8) +#define CCM_PLL1_CTRL_N(n) (((n) - 1) << 8) /* pll5 bit field */ #define CCM_PLL5_CTRL_EN BIT(31) #define CCM_PLL5_LOCK_EN BIT(29) #define CCM_PLL5_LOCK BIT(28) #define CCM_PLL5_OUT_EN BIT(27) -#define CCM_PLL5_CTRL_N(n) ((n) << 8) +#define CCM_PLL5_CTRL_N(n) (((n) - 1) << 8) #define CCM_PLL5_CTRL_DIV1(div1) ((div1) << 0) #define CCM_PLL5_CTRL_DIV2(div0) ((div0) << 1) diff --git a/arch/arm/mach-sunxi/clock_sun50i_h6.c b/arch/arm/mach-sunxi/clock_sun50i_h6.c index 492fc4a3fc..a947463e0a 100644 --- a/arch/arm/mach-sunxi/clock_sun50i_h6.c +++ b/arch/arm/mach-sunxi/clock_sun50i_h6.c @@ -94,7 +94,7 @@ unsigned int clock_get_pll6(void) int m = IS_ENABLED(CONFIG_MACH_SUN50I_H6) ? 4 : 2; uint32_t rval = readl(&ccm->pll6_cfg); - int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT); + int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT) + 1; int div1 = ((rval & CCM_PLL6_CTRL_DIV1_MASK) >> CCM_PLL6_CTRL_DIV1_SHIFT) + 1; int div2 = ((rval & CCM_PLL6_CTRL_DIV2_MASK) >> diff --git a/arch/arm/mach-sunxi/dram_sun50i_h6.c b/arch/arm/mach-sunxi/dram_sun50i_h6.c index 32ec0bc4cd..d05375c902 100644 --- a/arch/arm/mach-sunxi/dram_sun50i_h6.c +++ b/arch/arm/mach-sunxi/dram_sun50i_h6.c @@ -171,7 +171,7 @@ static void mctl_sys_init(struct dram_para *para) /* Set PLL5 rate to doubled DRAM clock rate */ writel(CCM_PLL5_CTRL_EN | CCM_PLL5_LOCK_EN | - CCM_PLL5_CTRL_N(para->clk * 2 / 24 - 1), &ccm->pll5_cfg); + CCM_PLL5_CTRL_N(para->clk * 2 / 24), &ccm->pll5_cfg); mctl_await_completion(&ccm->pll5_cfg, CCM_PLL5_LOCK, CCM_PLL5_LOCK); /* Configure DRAM mod clock */ diff --git a/arch/arm/mach-sunxi/dram_sun50i_h616.c b/arch/arm/mach-sunxi/dram_sun50i_h616.c index ef5876971c..acdfb3ceef 100644 --- a/arch/arm/mach-sunxi/dram_sun50i_h616.c +++ b/arch/arm/mach-sunxi/dram_sun50i_h616.c @@ -113,7 +113,7 @@ static void mctl_sys_init(struct dram_para *para) /* Set PLL5 rate to doubled DRAM clock rate */ writel(CCM_PLL5_CTRL_EN | CCM_PLL5_LOCK_EN | CCM_PLL5_OUT_EN | - CCM_PLL5_CTRL_N(para->clk * 2 / 24 - 1), &ccm->pll5_cfg); + CCM_PLL5_CTRL_N(para->clk * 2 / 24), &ccm->pll5_cfg); mctl_await_completion(&ccm->pll5_cfg, CCM_PLL5_LOCK, CCM_PLL5_LOCK); /* Configure DRAM mod clock */